Submission #3265541
Source Code Expand
#!/usr/bin/env rdmd import std.stdio; import std.conv; import std.string; import std.format; import std.algorithm; import std.array; import std.math; import std.range : iota; long INF = pow(10, 9); long MOD = pow(10, 9)+7; class Combination { long[] factorial; this(int n) { factorial = iota(cast(long) 1, cast(long) n).array; foreach (idx, e; factorial) { if (idx > 0) { factorial[idx] = factorial[idx] * factorial[idx-1] % MOD; } } } long choose(int n, int r) { if (!(0 <= r && r <= n)) { return 0; } else if (r==0 || r==n) { return 1; } else { return fact(n) * inverse( fact(r) * fact(n-r) % MOD ) % MOD; } } long fact(long n) { return factorial[n-1]; } long inverse(long x) { return mod_pow(x, MOD-2); } long mod_pow(long x, long n) { long ans = 1; while (n > 0) { if (n%2 != 0) { ans = ans * x % MOD; } x = x * x % MOD; n >>= 1; } return ans; } } void stringsTo(string, T...)(string str, ref T t) { auto s = str.split(); assert(s.length == t.length); foreach(ref ti; t) { ti = s[0].to!(typeof(ti)); s = s[1..$]; } } void main() { string lines; string buf; while (!stdin.eof) { buf = stdin.readln(); lines ~= buf; } string[] array = splitLines(lines); int N,D,X,Y; stringsTo(array[0], N, D); stringsTo(array[1], X, Y); if ((X%D)!=0 || (Y%D)!=0) { writefln("%f", cast(float) 0); } else { Combination comb = new Combination(N+7); long ans = 0; int short_lr = X/D; int short_ud = Y/D; // writefln("Goal (%d, %d), movable %d", X, Y, D); // writefln("shortest move left/right: %d, up/down:%d", X/D, Y/D); // writefln("is there any mod ? left/right: %d, up/down:%d", X%D, Y%D); long shortest = comb.choose(short_lr+short_ud, short_lr); foreach (int k; 0..N+1) { int lr_move_k = k; int ud_move_k = (N-k); int lr_r = (lr_move_k*D+X)/2/D; int ud_r = (ud_move_k*D+Y)/2/D; if (lr_move_k < short_lr || ud_move_k < short_ud) { //writefln("lr_r=%d, ud_r=%d, N=%d", lr_r, ud_r, N); continue; } else { // if (short_lr%2==0 && lr_move_k%2!=0 || short_lr%2!=0 && lr_move_k%2==0) { // continue; // } // if (short_ud%2==0 && ud_move_k%2!=0 || short_ud%2!=0 && ud_move_k%2==0) { // continue; // } // writefln("lr_move_k=%d, ud_move_k=%d, N=%d", lr_move_k, ud_move_k,N); // writefln("lr_r=%d, ud_r=%d, N=%d", lr_r, ud_r, N); long lr = comb.choose(lr_move_k, lr_r); long ud = comb.choose(ud_move_k, ud_r); long tmp = (shortest*lr*ud); // writefln("%d * %dC%d=%d * %dC%d=%d = %d", // shortest, // lr_move_k, lr_r, lr, // ud_move_k, ud_r, ud, // tmp); ans += tmp; } writefln("%9f", cast(float) ans/pow(4,N)); } } }
Submission Info
Submission Time | |
---|---|
Task | D - 大ジャンプ |
User | hiroyuking |
Language | D (DMD64 v2.070.1) |
Score | 0 |
Code Size | 3130 Byte |
Status | WA |
Exec Time | 3 ms |
Memory | 256 KB |
Judge Result
Set Name | part1 | part2 | All | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 90 | 0 / 10 | 0 / 1 | ||||||||||||
Status |
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Set Name | Test Cases |
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part1 | test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_2_91743015_0_183486030AB.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_4_291388018_-291388018_0AB.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt |
part2 | test_10_227248639_454497278_0B.txt, test_11_692637325_-181424149_-938839075B.txt, test_13_260236679_-780710037_-520473358B.txt, test_13_269280357_807841071_269280357B.txt, test_13_96859935_0_-581159610B.txt, test_16_40374395_-40374395_-565241530B.txt, test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_21_304856339_609712678_914569017B.txt, test_26_214390232_-857560928_428780464B.txt, test_2_91743015_0_183486030AB.txt, test_30_10000000_-300000000_0B.txt, test_30_10000000_0_300000000B.txt, test_30_10000000_150000000_-150000000B.txt, test_30_54228128_0_813421920B.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_4_291388018_-291388018_0AB.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt, test_9_283198156_849594468_849594468B.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, test_1000_1000000_-500000000_500000000.txt, test_1000_1000000_0_-1000000000.txt, test_1000_1000000_1000000000_0.txt, test_1000_150305_97998860_-32315575.txt, test_1000_1_0_0.txt, test_1000_1_2_0.txt, test_1000_1_2_2.txt, test_1000_3308678_-800700076_-350719868.txt, test_1000_3608549_811923525_689232859.txt, test_1000_3728577_-145414503_-969430020.txt, test_1000_537976_11297496_224335992.txt, test_10_227248639_454497278_0B.txt, test_11_692637325_-181424149_-938839075B.txt, test_130_95365311_-667557177_-286095933.txt, test_131_18204705_-145637640_0.txt, test_13_260236679_-780710037_-520473358B.txt, test_13_269280357_807841071_269280357B.txt, test_13_96859935_0_-581159610B.txt, test_16_40374395_-40374395_-565241530B.txt, test_1_151403858_0_0AB.txt, test_1_1_0_1AB.txt, test_1_1_2_0AB.txt, test_1_200416616_-430405070_-79858930AB.txt, test_1_320861287_0_0AB.txt, test_1_445441131_0_0AB.txt, test_210_28974130_0_260767170.txt, test_217_321156_24407856_22480920.txt, test_21_304856339_609712678_914569017B.txt, test_26_214390232_-857560928_428780464B.txt, test_289_421462830_-487186374_-417635361.txt, test_2_91743015_0_183486030AB.txt, test_30_10000000_-300000000_0B.txt, test_30_10000000_0_300000000B.txt, test_30_10000000_150000000_-150000000B.txt, test_30_54228128_0_813421920B.txt, test_339_4475128_957677392_281933064.txt, test_3_165357536_496072608_0AB.txt, test_3_357154050_-106436394_768502001AB.txt, test_3_721501125_-568833455_353553641AB.txt, test_3_893846474_0_0AB.txt, test_480_402960_-131767920_-34654560.txt, test_4_291388018_-291388018_0AB.txt, test_507_3516183_-879045750_-253165176.txt, test_515_8606048_-25818144_8606048.txt, test_522_2286376_-230923976_-18291008.txt, test_5_318547875_955643625_-637095750AB.txt, test_5_704387671_-704387671_0AB.txt, test_5_82323965_639854915_-688317394AB.txt, test_676_198114948_0_792459792.txt, test_688_151937211_-286341114_10198771.txt, test_6_187422602_374845204_-374845204AB.txt, test_6_346164451_0_0AB.txt, test_6_99058019_194123640_-837769837AB.txt, test_71_367604060_367604060_0.txt, test_752_120973200_0_-725839200.txt, test_772_881340073_0_0.txt, test_777_125719576_-499451637_822057459.txt, test_7_166330212_166330212_-332660424AB.txt, test_7_89698746_448493730_-179397492AB.txt, test_839_166155061_0_-332310122.txt, test_839_923157_923157_564972084.txt, test_849_415705_290993500_0.txt, test_873_418406_2928842_322172620.txt, test_8_10000000_-40000000_-40000000AB.txt, test_8_10000000_0_80000000AB.txt, test_8_10000000_80000000_0AB.txt, test_981_159373724_-637494896_-159373724.txt, test_9_283198156_849594468_849594468B.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 1 ms | 256 KB |
sample_02.txt | AC | 1 ms | 256 KB |
sample_03.txt | WA | 1 ms | 256 KB |
test_1000_1000000_-500000000_500000000.txt | WA | 2 ms | 256 KB |
test_1000_1000000_0_-1000000000.txt | WA | 2 ms | 256 KB |
test_1000_1000000_1000000000_0.txt | WA | 1 ms | 256 KB |
test_1000_150305_97998860_-32315575.txt | WA | 1 ms | 256 KB |
test_1000_1_0_0.txt | WA | 3 ms | 256 KB |
test_1000_1_2_0.txt | WA | 3 ms | 256 KB |
test_1000_1_2_2.txt | WA | 3 ms | 256 KB |
test_1000_3308678_-800700076_-350719868.txt | WA | 2 ms | 256 KB |
test_1000_3608549_811923525_689232859.txt | WA | 2 ms | 256 KB |
test_1000_3728577_-145414503_-969430020.txt | WA | 2 ms | 256 KB |
test_1000_537976_11297496_224335992.txt | WA | 2 ms | 256 KB |
test_10_227248639_454497278_0B.txt | WA | 1 ms | 256 KB |
test_11_692637325_-181424149_-938839075B.txt | AC | 1 ms | 256 KB |
test_130_95365311_-667557177_-286095933.txt | WA | 1 ms | 256 KB |
test_131_18204705_-145637640_0.txt | WA | 1 ms | 256 KB |
test_13_260236679_-780710037_-520473358B.txt | WA | 1 ms | 256 KB |
test_13_269280357_807841071_269280357B.txt | WA | 1 ms | 256 KB |
test_13_96859935_0_-581159610B.txt | WA | 1 ms | 256 KB |
test_16_40374395_-40374395_-565241530B.txt | WA | 1 ms | 256 KB |
test_1_151403858_0_0AB.txt | WA | 1 ms | 256 KB |
test_1_1_0_1AB.txt | AC | 1 ms | 256 KB |
test_1_1_2_0AB.txt | WA | 1 ms | 256 KB |
test_1_200416616_-430405070_-79858930AB.txt | AC | 1 ms | 256 KB |
test_1_320861287_0_0AB.txt | WA | 1 ms | 256 KB |
test_1_445441131_0_0AB.txt | WA | 1 ms | 256 KB |
test_210_28974130_0_260767170.txt | WA | 1 ms | 256 KB |
test_217_321156_24407856_22480920.txt | WA | 1 ms | 256 KB |
test_21_304856339_609712678_914569017B.txt | WA | 1 ms | 256 KB |
test_26_214390232_-857560928_428780464B.txt | WA | 1 ms | 256 KB |
test_289_421462830_-487186374_-417635361.txt | AC | 1 ms | 256 KB |
test_2_91743015_0_183486030AB.txt | AC | 1 ms | 256 KB |
test_30_10000000_-300000000_0B.txt | WA | 1 ms | 256 KB |
test_30_10000000_0_300000000B.txt | WA | 1 ms | 256 KB |
test_30_10000000_150000000_-150000000B.txt | WA | 1 ms | 256 KB |
test_30_54228128_0_813421920B.txt | WA | 1 ms | 256 KB |
test_339_4475128_957677392_281933064.txt | WA | 1 ms | 256 KB |
test_3_165357536_496072608_0AB.txt | AC | 1 ms | 256 KB |
test_3_357154050_-106436394_768502001AB.txt | AC | 1 ms | 256 KB |
test_3_721501125_-568833455_353553641AB.txt | AC | 1 ms | 256 KB |
test_3_893846474_0_0AB.txt | WA | 1 ms | 256 KB |
test_480_402960_-131767920_-34654560.txt | WA | 2 ms | 256 KB |
test_4_291388018_-291388018_0AB.txt | WA | 1 ms | 256 KB |
test_507_3516183_-879045750_-253165176.txt | WA | 2 ms | 256 KB |
test_515_8606048_-25818144_8606048.txt | WA | 2 ms | 256 KB |
test_522_2286376_-230923976_-18291008.txt | WA | 2 ms | 256 KB |
test_5_318547875_955643625_-637095750AB.txt | WA | 1 ms | 256 KB |
test_5_704387671_-704387671_0AB.txt | WA | 1 ms | 256 KB |
test_5_82323965_639854915_-688317394AB.txt | AC | 1 ms | 256 KB |
test_676_198114948_0_792459792.txt | WA | 2 ms | 256 KB |
test_688_151937211_-286341114_10198771.txt | AC | 1 ms | 256 KB |
test_6_187422602_374845204_-374845204AB.txt | WA | 1 ms | 256 KB |
test_6_346164451_0_0AB.txt | WA | 1 ms | 256 KB |
test_6_99058019_194123640_-837769837AB.txt | AC | 1 ms | 256 KB |
test_71_367604060_367604060_0.txt | WA | 1 ms | 256 KB |
test_752_120973200_0_-725839200.txt | WA | 2 ms | 256 KB |
test_772_881340073_0_0.txt | WA | 1 ms | 256 KB |
test_777_125719576_-499451637_822057459.txt | AC | 1 ms | 256 KB |
test_7_166330212_166330212_-332660424AB.txt | WA | 1 ms | 256 KB |
test_7_89698746_448493730_-179397492AB.txt | WA | 1 ms | 256 KB |
test_839_166155061_0_-332310122.txt | WA | 2 ms | 256 KB |
test_839_923157_923157_564972084.txt | WA | 1 ms | 256 KB |
test_849_415705_290993500_0.txt | WA | 1 ms | 256 KB |
test_873_418406_2928842_322172620.txt | WA | 1 ms | 256 KB |
test_8_10000000_-40000000_-40000000AB.txt | WA | 1 ms | 256 KB |
test_8_10000000_0_80000000AB.txt | AC | 1 ms | 256 KB |
test_8_10000000_80000000_0AB.txt | AC | 1 ms | 256 KB |
test_981_159373724_-637494896_-159373724.txt | WA | 2 ms | 256 KB |
test_9_283198156_849594468_849594468B.txt | WA | 1 ms | 256 KB |